7644843490 has 16 divisors (see below), whose sum is σ = 14020355448. Its totient is φ = 3000240256.

The previous prime is 7644843487. The next prime is 7644843491. The reversal of 7644843490 is 943484467.

It can be written as a sum of positive squares in 4 ways, for example, as 7603665601 + 41177889 = 87199^2 + 6417^2 .

It is not an unprimeable number, because it can be changed into a prime (7644843491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7211587 + ... + 7212646.

Almost surely, 2^7644843490 is an apocalyptic number.

7644843490 is a deficient number, since it is larger than the sum of its proper divisors (6375511958).

7644843490 is a wasteful number, since it uses less digits than its factorization.

7644843490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14424293.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The square root of 7644843490 is about 87434.7956479570. The cubic root of 7644843490 is about 1969.9545189497.

The spelling of 7644843490 in words is "seven billion, six hundred forty-four million, eight hundred forty-three thousand, four hundred ninety".